- 作者: Chandrashekhar P. Mane and Mansing A. Anuse*
- 作者服務機構: Analytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India
- 中文摘要:
A procedure is described for the liquid-liquid extraction and recovery of bismuth(III) from succinate solution using 2-octylaminopyridine (2-OAP) as an extractant. The quantitative extraction of bismuth(III) occurs from 0.004 to 0.007 M sodium succinate solution of pH 2.5-10 using 0.036 M 2-OAP in chloroform.
The extracted metal ion has been recovered by stripping with (3x10 mL) 0.5 M nitric acid. The
log-log plot of distribution ratio versus succinate concentration and distribution ratio versus 2-OAP concentration
gave slopes of 2.0 and 0.9, respectively, indicating a metal-succinate ratio of 1:2 and a metal :
2-OAP ratio of 1:1.
The ion pair complex has a high distribution ratio in chloroform, while other solvents are poor. The
extractants are stable towards prolonged acid contacts and there is no loss in its extraction efficiency even
after recycling ten times. The extraction behaviour of some commonly associated metal ions, namely
Ga(III), Cd(II), Zn(II), Cr(VI), Cu(II), Ba(II), Sb(III), Sn(IV), Tl(I) and Pb(II), has also been investigated.
Based on partition data, conditions have been identified for attaining some separations of bismuth(III)
from other metal ions; these conditions are extended for the recovery of pure bismuth from ore and alloys.
Thermodynamic quantities for the extraction process were calculated. - 英文摘要: --
- 中文關鍵字: Liquid-liquid extraction; Bismuth(III); 2-OAP; Sodium succinate; Analysis of real samples.
- 英文關鍵字: --